In the work designing the head mounted display with AMOLED image source is considered. The properties of the image generator influence greatly on the characteristics. Due to it is self-luminous and has small sizes, AMOLED microdisplay provide to the optical engineer possibilities of designing compact and high-quality systems. Another one important element in the HMD system is the combiner: applying power combiner allows us to provide sufficient eye-relief, but its power and the form defines the principal layout of the system and aberration balance. We consider the cases of elliptical and spherical form of a combiner, discuss the aberrations for both cases and show the procedure of designing of the HMD system that uses AMOLED display as an image generator.